leave well enough alone(to allow something to stay as it is because doing more would not improve it. e.g.I thought about rewriting the letter, but I decided to leave well enough alone. (Cambridge Dictionary of American Idioms). anita_storm)
perfect is the enemy of good(an aphorism which is commonly attributed to Voltaire, who quoted an Italian proverb in his Dictionnaire philosophique in 1770 Alex_Odeychuk)
the best is the enemy of the good enough(an aphorism which is commonly attributed to Voltaire, who quoted an Italian proverb in his Dictionnaire philosophique in 1770)
the best is the enemy of the good(an aphorism which is commonly attributed to Voltaire, who quoted an Italian proverb in his Dictionnaire philosophique in 1770)